I was thinking the same, except the ARRL’s grid square chase only goes to the 4th. character - which covers a lot of area, so as well as a SOTA summit a grid square is likely to also contain several populated areas in most cases.
Of couse trips to less populated areas (such as DXPedition type trips) may also be targets for grid square chasers.
The fact that all SOTA summits have the maidenhead grid squre in the SOTA database of course means that chasers can easily get this information if they want to use the SOTA contact to claim a new grid square.
73 Ed.